JPS6030445A - Centralized control for engine and electric accessories - Google Patents

Abstract

PURPOSE:To make engine control requiring high speed processing effective as well as reduce mounting bases, number of members, and cost, etc., by allowing electric accessories control to interrupt the engine control and the engine control to interrupt the electric accessories control at each prescribed time. CONSTITUTION:ROM21 of an arithmetic device 17 stores a control program of a CPU19, which includes processing programs such as a main program, an engine control subroutine, and an electric accessory control subroutine, etc. RAM23 stores an input data based on an engine operation state and an electric accessories application state, etc., and arithmetic operation results by the CPU19. The captioned device includes the above-described engine control means 17 for controlling a fuel injection valve in response to the operation state of the engine 31, an electric accessories control means 22 for controlling operations of the respective electric accessories 33 while detecting the application states of said respective electric accessories 33, etc., and a means 11 for generating an electric accessories control interruption signal S1 based on the operations relating to said respective electric accessories 33. Whereas the device mainly operates the engine control means 20, when said signal S1 is inputted, it controls the electric accessories by allowing the operation of the electric accessories control means 22 to interrupt.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention provides an integrated control system for engines and electrical components that centrally controls engine control that requires high-speed processing and electrical component control that requires low-speed processing using one control device. O Regarding Apparatus (Prior Art) Conventionally, engine control and operation control of a plurality of electrical components have been controlled by individual controllers and units.

(Problems with conventional technology) Therefore, as the number of control items for electrical components increases and the control content becomes mass-produced, the number of controllers and wiring increases, so even Daisei Trucks is running out of installation space. Moreover, the cost increase is also increasing. Furthermore, if engine control that requires high-speed processing and electrical component control that requires low-speed processing are simply combined, the control interval for engine control that requires high-speed processing becomes long, making it impossible to perform appropriate engine control.

(Objective of the Invention) The present invention has been made to solve these problems, and is capable of centrally controlling engine control, which requires high-speed processing, and electrical component control, which requires low-speed processing, using a single control device. death,
Electrical component control is interrupted by engine control, and engine control is also interrupted during electrical component control.

(Summary of the invention) FIG. 1 is a block diagram clearly showing the configuration of the present invention.

The engine and electrical component centralized control device of the present invention includes an engine 3
an engine control means 20 that controls fuel spray, etc. according to the operating state of the engine; an electrical component control means 22 that controls the operation of each electrical component 33 while detecting the usage state of each electrical component 33; Based on the operation related to the electrical component 33, the interrupt signal generating means 11 that generates the electrical component control interrupt signal S1 and the engine control means 20 are mainly operated. In addition to controlling the electrical components by interrupting the operation of the electrical component control means 22,
During the control of these electrical components, an interrupt means 24 is provided which interrupts the operation of the engine control means 20 at regular intervals.

(Example) FIG. 2 is a block diagram showing an embodiment of the invention.

In the same figure, reference numeral 11 denotes an interrupt signal generation means, and when an operation related to each electrical component, such as the operation of the control switch 13 of each electrical component or a speed indicator without a control switch, the electrical component is activated based on the detection signal of the speed sensor 15. Generates control interrupt signal Sl.

17 is an arithmetic unit, for example, a central processing unit (CPU)
19, read-only memory (ROM) 2 i.

It is composed of a microcomputer including a readable/writable memory (RAM) 23, an input port 25, an output port 27, a pass line 29, and the like. ROM,
21 stores a control program for the CPU 19. Main program, engine control subroutine, electrical component control subroutine, etc.

Contains processing programs. The RAM 23 stores input data based on engine operating conditions, usage conditions of electrical components, and calculation results of the CPU 19. The input boat 25 is connected to the interrupt signal generating means 11, the engine operating state detecting means, the electrical component usage state detecting means (the latter two are not shown), etc., and outputs the electrical component control interrupt signal S1 and the engine operating state. A state detection signal Sz1, an electrical component usage state detection signal 83, etc. are sent. The output boat 27 is connected to the engine 51, a plurality of electrical components 33, etc., and sends out an engine control signal S4 and an electrical component control signal S5, respectively.

The path line 29 includes an address bus line, a data bus line, a control line, etc. for connecting these. Arithmetic device 17, engine 31, and multiple electrical components 33
Interpose an interface between them as necessary.

Next, the operation of the embodiment of the present invention will be explained.

Figure 6 is a flowchart of the main program.

Figure 4 is a flowchart of the engine control subroutine.
and FIG. 5 is a flowchart of the electrical component control subroutine.

As shown in FIG. 3, the main program is executed by a combination of step Pl for determining whether the engine is in an operating state or not, and an engine control subroutine P2, and the engine control subroutine P2, which requires high-speed processing, is the main processing. The processing of the electrical component control subroutine, which can be performed at low speed, is secondary and is performed by interrupt processing to the engine control subroutine P2.

The engine control subroutine P2 is executed in detail by steps P21 to P23, as shown in FIG.

First, at P21 in the figure, interrupts are disabled. This prohibition of interrupts means that no interrupts can be made during the processing of the engine control subroutine P2.

At P22, engine control processing such as fuel injection is performed depending on the engine operating state.

At P23, enable interrupts, and from now on control switch 1 of each electrical component.
When an electrical component control interrupt signal S1 is received, such as a signal caused by turning ON of the speed sensor 15 or a branch signal of a pulse generated by the speed sensor 15, an electrical component control subroutine as shown in FIG. 5 is executed.

The electrical component control subroutine is executed in detail through steps P31 to P45, as shown in FIG.

First, a timer for generating 1 interrupt value is started at Pi11 in the same figure, and this timer generates an interrupt signal at fixed time intervals, and during the execution of the electrical component control subroutine, the engine control subroutine P2 is further interrupted. processing.

At P112, the usage state of the 7 lashes is detected and predetermined operation control is performed.

At P3g, the usage state of the wiper is detected and predetermined operation control is performed.

The Pi 14 detects the usage status of the tail lamp and performs predetermined operation control.

At Pa5, the usage status of the warning is detected and predetermined operation control is performed.

Pss determines whether the engine is in the operating state.

If NO, go to P37; if YES, go to P37.
Go to 4°.

PI? The fuel usage status is detected and predetermined operation control is performed.

Pss detects the usage state of the ink heater and performs predetermined operation control.

At Pa9, the usage status of the room lamp is detected, and after performing a predetermined operation, the process goes to P43.

At P2O, the usage status of engine overrun prevention is detected and predetermined operation control is performed.

At P41, it is determined whether the vehicle is in a running state.

If no, go to P42; if YES, go to P44
go to

In P42, the usage status of the seat belt is detected.

Performs predetermined operation control.

At P43, the usage state of the brake lock is detected and predetermined operation control is performed.

At P44, the usage state of the speed indicator is detected and predetermined operation control is performed.

At P45, the timer for generating an interrupt signal is stopped.

Furthermore, as another embodiment, as shown in FIGS. 6 and 7, the electrical component control subroutine may be divided for each device. That is, the electrical component control switches 1, 2 . . . , the speed sensor n is inputted to the input port 25 (see FIG. 2) via the priority interrupt signal generating means 11', and the interrupt signals S11 r 812 , . . . As a result, the electrical component control subroutine can be divided for each device as shown in FIG. For example, the interrupt signal generation timer is activated by the interrupt signal Stt, the flasher is operated, and then the interrupt signal generation timer is stopped and returned. Similarly, the wiper is operated by the interrupt signal S1□, and the wiper is similarly operated by the interrupt signal Sln.
The brake lock can be activated.

Note that, similar to engine control, it is also possible to incorporate miss control that requires high-speed processing.

(Effects of the Invention) As explained above, according to the present invention, since the engine and electrical components are centrally controlled with one control device, installation space, number and length of wiring, assembly process, cost, etc. are reduced. At the same time, it is also possible to centrally control electrical components, etc., which require low-speed processing, without adversely affecting engine control, which requires high-speed processing.

[Brief explanation of the drawing]

FIG. 1 is a block diagram clearly showing the configuration of the present invention. FIG. 2 is a block diagram showing an embodiment of the present invention. FIG. 3 is a flowchart of the main program, FIG. 4 is a flowchart of the engine control subroutine, FIG. 5 is a flowchart of the electrical component control subroutine, and FIG. 6 is a block diagram showing another embodiment of the present invention. FIG. 7 is a flowchart when the electrical component control subroutine is divided for each device. 11... Interrupt signal generation means 20... Engine control means 22... Electrical component control means 24... Interrupt means 31... Engine 33... Electrical components Sl... Electrical component control section Signal patent applicant: Isuso Jidosha - 1 other agent (excluding Co., Ltd.) Patent attorney Minoru Tsuji 1st drawing 5 Figure

Claims (1)

[Claims] an engine control means that controls fuel injection etc. according to the engine operating state; an electrical component control means that controls the operation of each electrical component while detecting the usage state of each electrical component;
The interrupt signal generation means for generating an electrical component control interrupt signal and the engine control means are mainly operated based on the operation related to the electrical component, but when the electrical component control interrupt signal is received,
Engine and electrical equipment equipped with an interrupt means that immediately interrupts the operation of the electrical equipment control means to control the electrical equipment, and also interrupts the operation of the engine control means at regular intervals during the control of the electrical equipment. Product centralized control device/